TABLE 1

Comparative Biodistribution of Coinjected ⁸⁶Y-3S193 and ¹¹¹In-3S193

Tissue	%ID/g ⁸⁶Y		%ID/g ¹¹¹In		Ratio ⁸⁶Y/¹¹¹In
Tissue	Day 2	Day 4	Day 2	Day 4	Day 2	Day 4
Tumor	29.8 ± 6.2	31.1 ± 3.6	29.1 ± 5.8	26.4 ± 2.4	1.03 ± 0.09	1.18 ± 0.11
Blood	13.8 ± 2.2	8.2 ± 1.4	13.1 ± 2.2	7.9 ± 1.4	1.05 ± 0.03	1.05 ± 0.03
Lungs	7.1 ± 1.3	6.2 ± 3.3	6.8 ± 1.3	6.0 ± 3.4	1.04 ± 0.02	1.05 ± 0.09
Liver	6.2 ± 1.2	4.0 ± 1.4	5.5 ± 1.0	3.0 ± 0.9	1.14 ± 0.06	1.33 ± 0.19
Spleen	3.4 ± 0.9	3.1 ± 0.3	3.6 ± 1.8	2.4 ± 0.3	1.01 ± 0.24	1.31 ± 0.19
Kidney	5.9 ± 0.5	4.8 ± 0.2	5.1 ± 0.5	3.7 ± 0.7	1.16 ± 0.05	1.32 ± 0.19
Stomach	2.6 ± 0.4	1.5 ± 0.5	2.3 ± 0.4	1.2 ± 0.3	1.15 ± 0.04	1.22 ± 0.16
Muscle	1.0 ± 0.2	0.6 ± 0.1	1.0 ± 0.1	0.6 ± 0.1	1.00 ± 0.02	0.94 ± 0.11
Bone	1.7 ± 0.3	1.7 ± 0.4	1.9 ± 0.4	1.4 ± 0.4	0.91 ± 0.04	1.20 ± 0.16